drivers/infiniband/hw/i40iw/i40iw_utils.c

   1 /*******************************************************************************
   2 *
   3 * Copyright (c) 2015-2016 Intel Corporation.  All rights reserved.
   4 *
   5 * This software is available to you under a choice of one of two
   6 * licenses.  You may choose to be licensed under the terms of the GNU
   7 * General Public License (GPL) Version 2, available from the file
   8 * COPYING in the main directory of this source tree, or the
   9 * OpenFabrics.org BSD license below:
  10 *
  11 *   Redistribution and use in source and binary forms, with or
  12 *   without modification, are permitted provided that the following
  13 *   conditions are met:
  14 *
  15 *    - Redistributions of source code must retain the above
  16 *       copyright notice, this list of conditions and the following
  17 *       disclaimer.
  18 *
  19 *    - Redistributions in binary form must reproduce the above
  20 *       copyright notice, this list of conditions and the following
  21 *       disclaimer in the documentation and/or other materials
  22 *       provided with the distribution.
  23 *
  24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  31 * SOFTWARE.
  32 *
  33 *******************************************************************************/
  34
  35 #include <linux/module.h>
  36 #include <linux/moduleparam.h>
  37 #include <linux/netdevice.h>
  38 #include <linux/etherdevice.h>
  39 #include <linux/ethtool.h>
  40 #include <linux/mii.h>
  41 #include <linux/if_vlan.h>
  42 #include <linux/crc32.h>
  43 #include <linux/in.h>
  44 #include <linux/ip.h>
  45 #include <linux/tcp.h>
  46 #include <linux/init.h>
  47 #include <linux/io.h>
  48 #include <asm/irq.h>
  49 #include <asm/byteorder.h>
  50 #include <net/netevent.h>
  51 #include <net/neighbour.h>
  52 #include "i40iw.h"
  53
  54 /**
  55  * i40iw_arp_table - manage arp table
  56  * @iwdev: iwarp device
  57  * @ip_addr: ip address for device
  58  * @mac_addr: mac address ptr
  59  * @action: modify, delete or add
  60  */
  61 int i40iw_arp_table(struct i40iw_device *iwdev,
  62                     u32 *ip_addr,
  63                     bool ipv4,
  64                     u8 *mac_addr,
  65                     u32 action)
  66 {
  67         int arp_index;
  68         int err;
  69         u32 ip[4];
  70
  71         if (ipv4) {
  72                 memset(ip, 0, sizeof(ip));
  73                 ip[0] = *ip_addr;
  74         } else {
  75                 memcpy(ip, ip_addr, sizeof(ip));
  76         }
  77
  78         for (arp_index = 0; (u32)arp_index < iwdev->arp_table_size; arp_index++)
  79                 if (memcmp(iwdev->arp_table[arp_index].ip_addr, ip, sizeof(ip)) == 0)
  80                         break;
  81         switch (action) {
  82         case I40IW_ARP_ADD:
  83                 if (arp_index != iwdev->arp_table_size)
  84                         return -1;
  85
  86                 arp_index = 0;
  87                 err = i40iw_alloc_resource(iwdev, iwdev->allocated_arps,
  88                                            iwdev->arp_table_size,
  89                                            (u32 *)&arp_index,
  90                                            &iwdev->next_arp_index);
  91
  92                 if (err)
  93                         return err;
  94
  95                 memcpy(iwdev->arp_table[arp_index].ip_addr, ip, sizeof(ip));
  96                 ether_addr_copy(iwdev->arp_table[arp_index].mac_addr, mac_addr);
  97                 break;
  98         case I40IW_ARP_RESOLVE:
  99                 if (arp_index == iwdev->arp_table_size)
 100                         return -1;
 101                 break;
 102         case I40IW_ARP_DELETE:
 103                 if (arp_index == iwdev->arp_table_size)
 104                         return -1;
 105                 memset(iwdev->arp_table[arp_index].ip_addr, 0,
 106                        sizeof(iwdev->arp_table[arp_index].ip_addr));
 107                 eth_zero_addr(iwdev->arp_table[arp_index].mac_addr);
 108                 i40iw_free_resource(iwdev, iwdev->allocated_arps, arp_index);
 109                 break;
 110         default:
 111                 return -1;
 112         }
 113         return arp_index;
 114 }
 115
 116 /**
 117  * i40iw_wr32 - write 32 bits to hw register
 118  * @hw: hardware information including registers
 119  * @reg: register offset
 120  * @value: vvalue to write to register
 121  */
 122 inline void i40iw_wr32(struct i40iw_hw *hw, u32 reg, u32 value)
 123 {
 124         writel(value, hw->hw_addr + reg);
 125 }
 126
 127 /**
 128  * i40iw_rd32 - read a 32 bit hw register
 129  * @hw: hardware information including registers
 130  * @reg: register offset
 131  *
 132  * Return value of register content
 133  */
 134 inline u32 i40iw_rd32(struct i40iw_hw *hw, u32 reg)
 135 {
 136         return readl(hw->hw_addr + reg);
 137 }
 138
 139 /**
 140  * i40iw_inetaddr_event - system notifier for netdev events
 141  * @notfier: not used
 142  * @event: event for notifier
 143  * @ptr: if address
 144  */
 145 int i40iw_inetaddr_event(struct notifier_block *notifier,
 146                          unsigned long event,
 147                          void *ptr)
 148 {
 149         struct in_ifaddr *ifa = ptr;
 150         struct net_device *event_netdev = ifa->ifa_dev->dev;
 151         struct net_device *netdev;
 152         struct net_device *upper_dev;
 153         struct i40iw_device *iwdev;
 154         struct i40iw_handler *hdl;
 155         u32 local_ipaddr;
 156         u32 action = I40IW_ARP_ADD;
 157
 158         hdl = i40iw_find_netdev(event_netdev);
 159         if (!hdl)
 160                 return NOTIFY_DONE;
 161
 162         iwdev = &hdl->device;
 163         if (iwdev->init_state < IP_ADDR_REGISTERED || iwdev->closing)
 164                 return NOTIFY_DONE;
 165
 166         netdev = iwdev->ldev->netdev;
 167         upper_dev = netdev_master_upper_dev_get(netdev);
 168         if (netdev != event_netdev)
 169                 return NOTIFY_DONE;
 170
 171         if (upper_dev)
 172                 local_ipaddr = ntohl(
 173                         ((struct in_device *)upper_dev->ip_ptr)->ifa_list->ifa_address);
 174         else
 175                 local_ipaddr = ntohl(ifa->ifa_address);
 176         switch (event) {
 177         case NETDEV_DOWN:
 178                 action = I40IW_ARP_DELETE;
 179                 /* Fall through */
 180         case NETDEV_UP:
 181                 /* Fall through */
 182         case NETDEV_CHANGEADDR:
 183                 i40iw_manage_arp_cache(iwdev,
 184                                        netdev->dev_addr,
 185                                        &local_ipaddr,
 186                                        true,
 187                                        action);
 188                 i40iw_if_notify(iwdev, netdev, &local_ipaddr, true,
 189                                 (action == I40IW_ARP_ADD) ? true : false);
 190                 break;
 191         default:
 192                 break;
 193         }
 194         return NOTIFY_DONE;
 195 }
 196
 197 /**
 198  * i40iw_inet6addr_event - system notifier for ipv6 netdev events
 199  * @notfier: not used
 200  * @event: event for notifier
 201  * @ptr: if address
 202  */
 203 int i40iw_inet6addr_event(struct notifier_block *notifier,
 204                           unsigned long event,
 205                           void *ptr)
 206 {
 207         struct inet6_ifaddr *ifa = (struct inet6_ifaddr *)ptr;
 208         struct net_device *event_netdev = ifa->idev->dev;
 209         struct net_device *netdev;
 210         struct i40iw_device *iwdev;
 211         struct i40iw_handler *hdl;
 212         u32 local_ipaddr6[4];
 213         u32 action = I40IW_ARP_ADD;
 214
 215         hdl = i40iw_find_netdev(event_netdev);
 216         if (!hdl)
 217                 return NOTIFY_DONE;
 218
 219         iwdev = &hdl->device;
 220         if (iwdev->init_state < IP_ADDR_REGISTERED || iwdev->closing)
 221                 return NOTIFY_DONE;
 222
 223         netdev = iwdev->ldev->netdev;
 224         if (netdev != event_netdev)
 225                 return NOTIFY_DONE;
 226
 227         i40iw_copy_ip_ntohl(local_ipaddr6, ifa->addr.in6_u.u6_addr32);
 228         switch (event) {
 229         case NETDEV_DOWN:
 230                 action = I40IW_ARP_DELETE;
 231                 /* Fall through */
 232         case NETDEV_UP:
 233                 /* Fall through */
 234         case NETDEV_CHANGEADDR:
 235                 i40iw_manage_arp_cache(iwdev,
 236                                        netdev->dev_addr,
 237                                        local_ipaddr6,
 238                                        false,
 239                                        action);
 240                 i40iw_if_notify(iwdev, netdev, local_ipaddr6, false,
 241                                 (action == I40IW_ARP_ADD) ? true : false);
 242                 break;
 243         default:
 244                 break;
 245         }
 246         return NOTIFY_DONE;
 247 }
 248
 249 /**
 250  * i40iw_net_event - system notifier for net events
 251  * @notfier: not used
 252  * @event: event for notifier
 253  * @ptr: neighbor
 254  */
 255 int i40iw_net_event(struct notifier_block *notifier, unsigned long event, void *ptr)
 256 {
 257         struct neighbour *neigh = ptr;
 258         struct i40iw_device *iwdev;
 259         struct i40iw_handler *iwhdl;
 260         __be32 *p;
 261         u32 local_ipaddr[4];
 262
 263         switch (event) {
 264         case NETEVENT_NEIGH_UPDATE:
 265                 iwhdl = i40iw_find_netdev((struct net_device *)neigh->dev);
 266                 if (!iwhdl)
 267                         return NOTIFY_DONE;
 268                 iwdev = &iwhdl->device;
 269                 if (iwdev->init_state < IP_ADDR_REGISTERED || iwdev->closing)
 270                         return NOTIFY_DONE;
 271                 p = (__be32 *)neigh->primary_key;
 272                 i40iw_copy_ip_ntohl(local_ipaddr, p);
 273                 if (neigh->nud_state & NUD_VALID) {
 274                         i40iw_manage_arp_cache(iwdev,
 275                                                neigh->ha,
 276                                                local_ipaddr,
 277                                                false,
 278                                                I40IW_ARP_ADD);
 279
 280                 } else {
 281                         i40iw_manage_arp_cache(iwdev,
 282                                                neigh->ha,
 283                                                local_ipaddr,
 284                                                false,
 285                                                I40IW_ARP_DELETE);
 286                 }
 287                 break;
 288         default:
 289                 break;
 290         }
 291         return NOTIFY_DONE;
 292 }
 293
 294 /**
 295  * i40iw_get_cqp_request - get cqp struct
 296  * @cqp: device cqp ptr
 297  * @wait: cqp to be used in wait mode
 298  */
 299 struct i40iw_cqp_request *i40iw_get_cqp_request(struct i40iw_cqp *cqp, bool wait)
 300 {
 301         struct i40iw_cqp_request *cqp_request = NULL;
 302         unsigned long flags;
 303
 304         spin_lock_irqsave(&cqp->req_lock, flags);
 305         if (!list_empty(&cqp->cqp_avail_reqs)) {
 306                 cqp_request = list_entry(cqp->cqp_avail_reqs.next,
 307                                          struct i40iw_cqp_request, list);
 308                 list_del_init(&cqp_request->list);
 309         }
 310         spin_unlock_irqrestore(&cqp->req_lock, flags);
 311         if (!cqp_request) {
 312                 cqp_request = kzalloc(sizeof(*cqp_request), GFP_ATOMIC);
 313                 if (cqp_request) {
 314                         cqp_request->dynamic = true;
 315                         INIT_LIST_HEAD(&cqp_request->list);
 316                         init_waitqueue_head(&cqp_request->waitq);
 317                 }
 318         }
 319         if (!cqp_request) {
 320                 i40iw_pr_err("CQP Request Fail: No Memory");
 321                 return NULL;
 322         }
 323
 324         if (wait) {
 325                 atomic_set(&cqp_request->refcount, 2);
 326                 cqp_request->waiting = true;
 327         } else {
 328                 atomic_set(&cqp_request->refcount, 1);
 329         }
 330         return cqp_request;
 331 }
 332
 333 /**
 334  * i40iw_free_cqp_request - free cqp request
 335  * @cqp: cqp ptr
 336  * @cqp_request: to be put back in cqp list
 337  */
 338 void i40iw_free_cqp_request(struct i40iw_cqp *cqp, struct i40iw_cqp_request *cqp_request)
 339 {
 340         struct i40iw_device *iwdev = container_of(cqp, struct i40iw_device, cqp);
 341         unsigned long flags;
 342
 343         if (cqp_request->dynamic) {
 344                 kfree(cqp_request);
 345         } else {
 346                 cqp_request->request_done = false;
 347                 cqp_request->callback_fcn = NULL;
 348                 cqp_request->waiting = false;
 349
 350                 spin_lock_irqsave(&cqp->req_lock, flags);
 351                 list_add_tail(&cqp_request->list, &cqp->cqp_avail_reqs);
 352                 spin_unlock_irqrestore(&cqp->req_lock, flags);
 353         }
 354         wake_up(&iwdev->close_wq);
 355 }
 356
 357 /**
 358  * i40iw_put_cqp_request - dec ref count and free if 0
 359  * @cqp: cqp ptr
 360  * @cqp_request: to be put back in cqp list
 361  */
 362 void i40iw_put_cqp_request(struct i40iw_cqp *cqp,
 363                            struct i40iw_cqp_request *cqp_request)
 364 {
 365         if (atomic_dec_and_test(&cqp_request->refcount))
 366                 i40iw_free_cqp_request(cqp, cqp_request);
 367 }
 368
 369 /**
 370  * i40iw_free_pending_cqp_request -free pending cqp request objs
 371  * @cqp: cqp ptr
 372  * @cqp_request: to be put back in cqp list
 373  */
 374 static void i40iw_free_pending_cqp_request(struct i40iw_cqp *cqp,
 375                                            struct i40iw_cqp_request *cqp_request)
 376 {
 377         struct i40iw_device *iwdev = container_of(cqp, struct i40iw_device, cqp);
 378
 379         if (cqp_request->waiting) {
 380                 cqp_request->compl_info.error = true;
 381                 cqp_request->request_done = true;
 382                 wake_up(&cqp_request->waitq);
 383         }
 384         i40iw_put_cqp_request(cqp, cqp_request);
 385         wait_event_timeout(iwdev->close_wq,
 386                            !atomic_read(&cqp_request->refcount),
 387                            1000);
 388 }
 389
 390 /**
 391  * i40iw_cleanup_pending_cqp_op - clean-up cqp with no completions
 392  * @iwdev: iwarp device
 393  */
 394 void i40iw_cleanup_pending_cqp_op(struct i40iw_device *iwdev)
 395 {
 396         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 397         struct i40iw_cqp *cqp = &iwdev->cqp;
 398         struct i40iw_cqp_request *cqp_request = NULL;
 399         struct cqp_commands_info *pcmdinfo = NULL;
 400         u32 i, pending_work, wqe_idx;
 401
 402         pending_work = I40IW_RING_WORK_AVAILABLE(cqp->sc_cqp.sq_ring);
 403         wqe_idx = I40IW_RING_GETCURRENT_TAIL(cqp->sc_cqp.sq_ring);
 404         for (i = 0; i < pending_work; i++) {
 405                 cqp_request = (struct i40iw_cqp_request *)(unsigned long)cqp->scratch_array[wqe_idx];
 406                 if (cqp_request)
 407                         i40iw_free_pending_cqp_request(cqp, cqp_request);
 408                 wqe_idx = (wqe_idx + 1) % I40IW_RING_GETSIZE(cqp->sc_cqp.sq_ring);
 409         }
 410
 411         while (!list_empty(&dev->cqp_cmd_head)) {
 412                 pcmdinfo = (struct cqp_commands_info *)i40iw_remove_head(&dev->cqp_cmd_head);
 413                 cqp_request = container_of(pcmdinfo, struct i40iw_cqp_request, info);
 414                 if (cqp_request)
 415                         i40iw_free_pending_cqp_request(cqp, cqp_request);
 416         }
 417 }
 418
 419 /**
 420  * i40iw_free_qp - callback after destroy cqp completes
 421  * @cqp_request: cqp request for destroy qp
 422  * @num: not used
 423  */
 424 static void i40iw_free_qp(struct i40iw_cqp_request *cqp_request, u32 num)
 425 {
 426         struct i40iw_sc_qp *qp = (struct i40iw_sc_qp *)cqp_request->param;
 427         struct i40iw_qp *iwqp = (struct i40iw_qp *)qp->back_qp;
 428         struct i40iw_device *iwdev;
 429         u32 qp_num = iwqp->ibqp.qp_num;
 430
 431         iwdev = iwqp->iwdev;
 432
 433         i40iw_rem_pdusecount(iwqp->iwpd, iwdev);
 434         i40iw_free_qp_resources(iwdev, iwqp, qp_num);
 435         i40iw_rem_devusecount(iwdev);
 436 }
 437
 438 /**
 439  * i40iw_wait_event - wait for completion
 440  * @iwdev: iwarp device
 441  * @cqp_request: cqp request to wait
 442  */
 443 static int i40iw_wait_event(struct i40iw_device *iwdev,
 444                             struct i40iw_cqp_request *cqp_request)
 445 {
 446         struct cqp_commands_info *info = &cqp_request->info;
 447         struct i40iw_cqp *iwcqp = &iwdev->cqp;
 448         struct i40iw_cqp_timeout cqp_timeout;
 449         bool cqp_error = false;
 450         int err_code = 0;
 451         memset(&cqp_timeout, 0, sizeof(cqp_timeout));
 452         cqp_timeout.compl_cqp_cmds = iwdev->sc_dev.cqp_cmd_stats[OP_COMPLETED_COMMANDS];
 453         do {
 454                 if (wait_event_timeout(cqp_request->waitq,
 455                                        cqp_request->request_done, CQP_COMPL_WAIT_TIME))
 456                         break;
 457
 458                 i40iw_check_cqp_progress(&cqp_timeout, &iwdev->sc_dev);
 459
 460                 if (cqp_timeout.count < CQP_TIMEOUT_THRESHOLD)
 461                         continue;
 462
 463                 i40iw_pr_err("error cqp command 0x%x timed out", info->cqp_cmd);
 464                 err_code = -ETIME;
 465                 if (!iwdev->reset) {
 466                         iwdev->reset = true;
 467                         i40iw_request_reset(iwdev);
 468                 }
 469                 goto done;
 470         } while (1);
 471         cqp_error = cqp_request->compl_info.error;
 472         if (cqp_error) {
 473                 i40iw_pr_err("error cqp command 0x%x completion maj = 0x%x min=0x%x\n",
 474                              info->cqp_cmd, cqp_request->compl_info.maj_err_code,
 475                              cqp_request->compl_info.min_err_code);
 476                 err_code = -EPROTO;
 477                 goto done;
 478         }
 479 done:
 480         i40iw_put_cqp_request(iwcqp, cqp_request);
 481         return err_code;
 482 }
 483
 484 /**
 485  * i40iw_handle_cqp_op - process cqp command
 486  * @iwdev: iwarp device
 487  * @cqp_request: cqp request to process
 488  */
 489 enum i40iw_status_code i40iw_handle_cqp_op(struct i40iw_device *iwdev,
 490                                            struct i40iw_cqp_request
 491                                            *cqp_request)
 492 {
 493         struct i40iw_sc_dev *dev = &iwdev->sc_dev;
 494         enum i40iw_status_code status;
 495         struct cqp_commands_info *info = &cqp_request->info;
 496         int err_code = 0;
 497
 498         if (iwdev->reset) {
 499                 i40iw_free_cqp_request(&iwdev->cqp, cqp_request);
 500                 return I40IW_ERR_CQP_COMPL_ERROR;
 501         }
 502
 503         status = i40iw_process_cqp_cmd(dev, info);
 504         if (status) {
 505                 i40iw_pr_err("error cqp command 0x%x failed\n", info->cqp_cmd);
 506                 i40iw_free_cqp_request(&iwdev->cqp, cqp_request);
 507                 return status;
 508         }
 509         if (cqp_request->waiting)
 510                 err_code = i40iw_wait_event(iwdev, cqp_request);
 511         if (err_code)
 512                 status = I40IW_ERR_CQP_COMPL_ERROR;
 513         return status;
 514 }
 515
 516 /**
 517  * i40iw_add_devusecount - add dev refcount
 518  * @iwdev: dev for refcount
 519  */
 520 void i40iw_add_devusecount(struct i40iw_device *iwdev)
 521 {
 522         atomic64_inc(&iwdev->use_count);
 523 }
 524
 525 /**
 526  * i40iw_rem_devusecount - decrement refcount for dev
 527  * @iwdev: device
 528  */
 529 void i40iw_rem_devusecount(struct i40iw_device *iwdev)
 530 {
 531         if (!atomic64_dec_and_test(&iwdev->use_count))
 532                 return;
 533         wake_up(&iwdev->close_wq);
 534 }
 535
 536 /**
 537  * i40iw_add_pdusecount - add pd refcount
 538  * @iwpd: pd for refcount
 539  */
 540 void i40iw_add_pdusecount(struct i40iw_pd *iwpd)
 541 {
 542         atomic_inc(&iwpd->usecount);
 543 }
 544
 545 /**
 546  * i40iw_rem_pdusecount - decrement refcount for pd and free if 0
 547  * @iwpd: pd for refcount
 548  * @iwdev: iwarp device
 549  */
 550 void i40iw_rem_pdusecount(struct i40iw_pd *iwpd, struct i40iw_device *iwdev)
 551 {
 552         if (!atomic_dec_and_test(&iwpd->usecount))
 553                 return;
 554         i40iw_free_resource(iwdev, iwdev->allocated_pds, iwpd->sc_pd.pd_id);
 555         kfree(iwpd);
 556 }
 557
 558 /**
 559  * i40iw_add_ref - add refcount for qp
 560  * @ibqp: iqarp qp
 561  */
 562 void i40iw_add_ref(struct ib_qp *ibqp)
 563 {
 564         struct i40iw_qp *iwqp = (struct i40iw_qp *)ibqp;
 565
 566         atomic_inc(&iwqp->refcount);
 567 }
 568
 569 /**
 570  * i40iw_rem_ref - rem refcount for qp and free if 0
 571  * @ibqp: iqarp qp
 572  */
 573 void i40iw_rem_ref(struct ib_qp *ibqp)
 574 {
 575         struct i40iw_qp *iwqp;
 576         enum i40iw_status_code status;
 577         struct i40iw_cqp_request *cqp_request;
 578         struct cqp_commands_info *cqp_info;
 579         struct i40iw_device *iwdev;
 580         u32 qp_num;
 581         unsigned long flags;
 582
 583         iwqp = to_iwqp(ibqp);
 584         iwdev = iwqp->iwdev;
 585         spin_lock_irqsave(&iwdev->qptable_lock, flags);
 586         if (!atomic_dec_and_test(&iwqp->refcount)) {
 587                 spin_unlock_irqrestore(&iwdev->qptable_lock, flags);
 588                 return;
 589         }
 590
 591         qp_num = iwqp->ibqp.qp_num;
 592         iwdev->qp_table[qp_num] = NULL;
 593         spin_unlock_irqrestore(&iwdev->qptable_lock, flags);
 594         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
 595         if (!cqp_request)
 596                 return;
 597
 598         cqp_request->callback_fcn = i40iw_free_qp;
 599         cqp_request->param = (void *)&iwqp->sc_qp;
 600         cqp_info = &cqp_request->info;
 601         cqp_info->cqp_cmd = OP_QP_DESTROY;
 602         cqp_info->post_sq = 1;
 603         cqp_info->in.u.qp_destroy.qp = &iwqp->sc_qp;
 604         cqp_info->in.u.qp_destroy.scratch = (uintptr_t)cqp_request;
 605         cqp_info->in.u.qp_destroy.remove_hash_idx = true;
 606         status = i40iw_handle_cqp_op(iwdev, cqp_request);
 607         if (!status)
 608                 return;
 609
 610         i40iw_rem_pdusecount(iwqp->iwpd, iwdev);
 611         i40iw_free_qp_resources(iwdev, iwqp, qp_num);
 612         i40iw_rem_devusecount(iwdev);
 613 }
 614
 615 /**
 616  * i40iw_get_qp - get qp address
 617  * @device: iwarp device
 618  * @qpn: qp number
 619  */
 620 struct ib_qp *i40iw_get_qp(struct ib_device *device, int qpn)
 621 {
 622         struct i40iw_device *iwdev = to_iwdev(device);
 623
 624         if ((qpn < IW_FIRST_QPN) || (qpn >= iwdev->max_qp))
 625                 return NULL;
 626
 627         return &iwdev->qp_table[qpn]->ibqp;
 628 }
 629
 630 /**
 631  * i40iw_debug_buf - print debug msg and buffer is mask set
 632  * @dev: hardware control device structure
 633  * @mask: mask to compare if to print debug buffer
 634  * @buf: points buffer addr
 635  * @size: saize of buffer to print
 636  */
 637 void i40iw_debug_buf(struct i40iw_sc_dev *dev,
 638                      enum i40iw_debug_flag mask,
 639                      char *desc,
 640                      u64 *buf,
 641                      u32 size)
 642 {
 643         u32 i;
 644
 645         if (!(dev->debug_mask & mask))
 646                 return;
 647         i40iw_debug(dev, mask, "%s\n", desc);
 648         i40iw_debug(dev, mask, "starting address virt=%p phy=%llxh\n", buf,
 649                     (unsigned long long)virt_to_phys(buf));
 650
 651         for (i = 0; i < size; i += 8)
 652                 i40iw_debug(dev, mask, "index %03d val: %016llx\n", i, buf[i / 8]);
 653 }
 654
 655 /**
 656  * i40iw_get_hw_addr - return hw addr
 657  * @par: points to shared dev
 658  */
 659 u8 __iomem *i40iw_get_hw_addr(void *par)
 660 {
 661         struct i40iw_sc_dev *dev = (struct i40iw_sc_dev *)par;
 662
 663         return dev->hw->hw_addr;
 664 }
 665
 666 /**
 667  * i40iw_remove_head - return head entry and remove from list
 668  * @list: list for entry
 669  */
 670 void *i40iw_remove_head(struct list_head *list)
 671 {
 672         struct list_head *entry;
 673
 674         if (list_empty(list))
 675                 return NULL;
 676
 677         entry = (void *)list->next;
 678         list_del(entry);
 679         return (void *)entry;
 680 }
 681
 682 /**
 683  * i40iw_allocate_dma_mem - Memory alloc helper fn
 684  * @hw:   pointer to the HW structure
 685  * @mem:  ptr to mem struct to fill out
 686  * @size: size of memory requested
 687  * @alignment: what to align the allocation to
 688  */
 689 enum i40iw_status_code i40iw_allocate_dma_mem(struct i40iw_hw *hw,
 690                                               struct i40iw_dma_mem *mem,
 691                                               u64 size,
 692                                               u32 alignment)
 693 {
 694         struct pci_dev *pcidev = (struct pci_dev *)hw->dev_context;
 695
 696         if (!mem)
 697                 return I40IW_ERR_PARAM;
 698         mem->size = ALIGN(size, alignment);
 699         mem->va = dma_zalloc_coherent(&pcidev->dev, mem->size,
 700                                       (dma_addr_t *)&mem->pa, GFP_KERNEL);
 701         if (!mem->va)
 702                 return I40IW_ERR_NO_MEMORY;
 703         return 0;
 704 }
 705
 706 /**
 707  * i40iw_free_dma_mem - Memory free helper fn
 708  * @hw:   pointer to the HW structure
 709  * @mem:  ptr to mem struct to free
 710  */
 711 void i40iw_free_dma_mem(struct i40iw_hw *hw, struct i40iw_dma_mem *mem)
 712 {
 713         struct pci_dev *pcidev = (struct pci_dev *)hw->dev_context;
 714
 715         if (!mem || !mem->va)
 716                 return;
 717
 718         dma_free_coherent(&pcidev->dev, mem->size,
 719                           mem->va, (dma_addr_t)mem->pa);
 720         mem->va = NULL;
 721 }
 722
 723 /**
 724  * i40iw_allocate_virt_mem - virtual memory alloc helper fn
 725  * @hw:   pointer to the HW structure
 726  * @mem:  ptr to mem struct to fill out
 727  * @size: size of memory requested
 728  */
 729 enum i40iw_status_code i40iw_allocate_virt_mem(struct i40iw_hw *hw,
 730                                                struct i40iw_virt_mem *mem,
 731                                                u32 size)
 732 {
 733         if (!mem)
 734                 return I40IW_ERR_PARAM;
 735
 736         mem->size = size;
 737         mem->va = kzalloc(size, GFP_KERNEL);
 738
 739         if (mem->va)
 740                 return 0;
 741         else
 742                 return I40IW_ERR_NO_MEMORY;
 743 }
 744
 745 /**
 746  * i40iw_free_virt_mem - virtual memory free helper fn
 747  * @hw:   pointer to the HW structure
 748  * @mem:  ptr to mem struct to free
 749  */
 750 enum i40iw_status_code i40iw_free_virt_mem(struct i40iw_hw *hw,
 751                                            struct i40iw_virt_mem *mem)
 752 {
 753         if (!mem)
 754                 return I40IW_ERR_PARAM;
 755         /*
 756          * mem->va points to the parent of mem, so both mem and mem->va
 757          * can not be touched once mem->va is freed
 758          */
 759         kfree(mem->va);
 760         return 0;
 761 }
 762
 763 /**
 764  * i40iw_cqp_sds_cmd - create cqp command for sd
 765  * @dev: hardware control device structure
 766  * @sd_info: information  for sd cqp
 767  *
 768  */
 769 enum i40iw_status_code i40iw_cqp_sds_cmd(struct i40iw_sc_dev *dev,
 770                                          struct i40iw_update_sds_info *sdinfo)
 771 {
 772         enum i40iw_status_code status;
 773         struct i40iw_cqp_request *cqp_request;
 774         struct cqp_commands_info *cqp_info;
 775         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
 776
 777         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
 778         if (!cqp_request)
 779                 return I40IW_ERR_NO_MEMORY;
 780         cqp_info = &cqp_request->info;
 781         memcpy(&cqp_info->in.u.update_pe_sds.info, sdinfo,
 782                sizeof(cqp_info->in.u.update_pe_sds.info));
 783         cqp_info->cqp_cmd = OP_UPDATE_PE_SDS;
 784         cqp_info->post_sq = 1;
 785         cqp_info->in.u.update_pe_sds.dev = dev;
 786         cqp_info->in.u.update_pe_sds.scratch = (uintptr_t)cqp_request;
 787         status = i40iw_handle_cqp_op(iwdev, cqp_request);
 788         if (status)
 789                 i40iw_pr_err("CQP-OP Update SD's fail");
 790         return status;
 791 }
 792
 793 /**
 794  * i40iw_qp_suspend_resume - cqp command for suspend/resume
 795  * @dev: hardware control device structure
 796  * @qp: hardware control qp
 797  * @suspend: flag if suspend or resume
 798  */
 799 void i40iw_qp_suspend_resume(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp, bool suspend)
 800 {
 801         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
 802         struct i40iw_cqp_request *cqp_request;
 803         struct i40iw_sc_cqp *cqp = dev->cqp;
 804         struct cqp_commands_info *cqp_info;
 805         enum i40iw_status_code status;
 806
 807         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
 808         if (!cqp_request)
 809                 return;
 810
 811         cqp_info = &cqp_request->info;
 812         cqp_info->cqp_cmd = (suspend) ? OP_SUSPEND : OP_RESUME;
 813         cqp_info->in.u.suspend_resume.cqp = cqp;
 814         cqp_info->in.u.suspend_resume.qp = qp;
 815         cqp_info->in.u.suspend_resume.scratch = (uintptr_t)cqp_request;
 816         status = i40iw_handle_cqp_op(iwdev, cqp_request);
 817         if (status)
 818                 i40iw_pr_err("CQP-OP QP Suspend/Resume fail");
 819 }
 820
 821 /**
 822  * i40iw_term_modify_qp - modify qp for term message
 823  * @qp: hardware control qp
 824  * @next_state: qp's next state
 825  * @term: terminate code
 826  * @term_len: length
 827  */
 828 void i40iw_term_modify_qp(struct i40iw_sc_qp *qp, u8 next_state, u8 term, u8 term_len)
 829 {
 830         struct i40iw_qp *iwqp;
 831
 832         iwqp = (struct i40iw_qp *)qp->back_qp;
 833         i40iw_next_iw_state(iwqp, next_state, 0, term, term_len);
 834 };
 835
 836 /**
 837  * i40iw_terminate_done - after terminate is completed
 838  * @qp: hardware control qp
 839  * @timeout_occurred: indicates if terminate timer expired
 840  */
 841 void i40iw_terminate_done(struct i40iw_sc_qp *qp, int timeout_occurred)
 842 {
 843         struct i40iw_qp *iwqp;
 844         u32 next_iwarp_state = I40IW_QP_STATE_ERROR;
 845         u8 hte = 0;
 846         bool first_time;
 847         unsigned long flags;
 848
 849         iwqp = (struct i40iw_qp *)qp->back_qp;
 850         spin_lock_irqsave(&iwqp->lock, flags);
 851         if (iwqp->hte_added) {
 852                 iwqp->hte_added = 0;
 853                 hte = 1;
 854         }
 855         first_time = !(qp->term_flags & I40IW_TERM_DONE);
 856         qp->term_flags |= I40IW_TERM_DONE;
 857         spin_unlock_irqrestore(&iwqp->lock, flags);
 858         if (first_time) {
 859                 if (!timeout_occurred)
 860                         i40iw_terminate_del_timer(qp);
 861                 else
 862                         next_iwarp_state = I40IW_QP_STATE_CLOSING;
 863
 864                 i40iw_next_iw_state(iwqp, next_iwarp_state, hte, 0, 0);
 865                 i40iw_cm_disconn(iwqp);
 866         }
 867 }
 868
 869 /**
 870  * i40iw_terminate_imeout - timeout happened
 871  * @context: points to iwarp qp
 872  */
 873 static void i40iw_terminate_timeout(unsigned long context)
 874 {
 875         struct i40iw_qp *iwqp = (struct i40iw_qp *)context;
 876         struct i40iw_sc_qp *qp = (struct i40iw_sc_qp *)&iwqp->sc_qp;
 877
 878         i40iw_terminate_done(qp, 1);
 879         i40iw_rem_ref(&iwqp->ibqp);
 880 }
 881
 882 /**
 883  * i40iw_terminate_start_timer - start terminate timeout
 884  * @qp: hardware control qp
 885  */
 886 void i40iw_terminate_start_timer(struct i40iw_sc_qp *qp)
 887 {
 888         struct i40iw_qp *iwqp;
 889
 890         iwqp = (struct i40iw_qp *)qp->back_qp;
 891         i40iw_add_ref(&iwqp->ibqp);
 892         setup_timer(&iwqp->terminate_timer, i40iw_terminate_timeout,
 893                     (unsigned long)iwqp);
 894         iwqp->terminate_timer.expires = jiffies + HZ;
 895         add_timer(&iwqp->terminate_timer);
 896 }
 897
 898 /**
 899  * i40iw_terminate_del_timer - delete terminate timeout
 900  * @qp: hardware control qp
 901  */
 902 void i40iw_terminate_del_timer(struct i40iw_sc_qp *qp)
 903 {
 904         struct i40iw_qp *iwqp;
 905
 906         iwqp = (struct i40iw_qp *)qp->back_qp;
 907         if (del_timer(&iwqp->terminate_timer))
 908                 i40iw_rem_ref(&iwqp->ibqp);
 909 }
 910
 911 /**
 912  * i40iw_cqp_generic_worker - generic worker for cqp
 913  * @work: work pointer
 914  */
 915 static void i40iw_cqp_generic_worker(struct work_struct *work)
 916 {
 917         struct i40iw_virtchnl_work_info *work_info =
 918             &((struct virtchnl_work *)work)->work_info;
 919
 920         if (work_info->worker_vf_dev)
 921                 work_info->callback_fcn(work_info->worker_vf_dev);
 922 }
 923
 924 /**
 925  * i40iw_cqp_spawn_worker - spawn worket thread
 926  * @iwdev: device struct pointer
 927  * @work_info: work request info
 928  * @iw_vf_idx: virtual function index
 929  */
 930 void i40iw_cqp_spawn_worker(struct i40iw_sc_dev *dev,
 931                             struct i40iw_virtchnl_work_info *work_info,
 932                             u32 iw_vf_idx)
 933 {
 934         struct virtchnl_work *work;
 935         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
 936
 937         work = &iwdev->virtchnl_w[iw_vf_idx];
 938         memcpy(&work->work_info, work_info, sizeof(*work_info));
 939         INIT_WORK(&work->work, i40iw_cqp_generic_worker);
 940         queue_work(iwdev->virtchnl_wq, &work->work);
 941 }
 942
 943 /**
 944  * i40iw_cqp_manage_hmc_fcn_worker -
 945  * @work: work pointer for hmc info
 946  */
 947 static void i40iw_cqp_manage_hmc_fcn_worker(struct work_struct *work)
 948 {
 949         struct i40iw_cqp_request *cqp_request =
 950             ((struct virtchnl_work *)work)->cqp_request;
 951         struct i40iw_ccq_cqe_info ccq_cqe_info;
 952         struct i40iw_hmc_fcn_info *hmcfcninfo =
 953                         &cqp_request->info.in.u.manage_hmc_pm.info;
 954         struct i40iw_device *iwdev =
 955             (struct i40iw_device *)cqp_request->info.in.u.manage_hmc_pm.dev->back_dev;
 956
 957         ccq_cqe_info.cqp = NULL;
 958         ccq_cqe_info.maj_err_code = cqp_request->compl_info.maj_err_code;
 959         ccq_cqe_info.min_err_code = cqp_request->compl_info.min_err_code;
 960         ccq_cqe_info.op_code = cqp_request->compl_info.op_code;
 961         ccq_cqe_info.op_ret_val = cqp_request->compl_info.op_ret_val;
 962         ccq_cqe_info.scratch = 0;
 963         ccq_cqe_info.error = cqp_request->compl_info.error;
 964         hmcfcninfo->callback_fcn(cqp_request->info.in.u.manage_hmc_pm.dev,
 965                                  hmcfcninfo->cqp_callback_param, &ccq_cqe_info);
 966         i40iw_put_cqp_request(&iwdev->cqp, cqp_request);
 967 }
 968
 969 /**
 970  * i40iw_cqp_manage_hmc_fcn_callback - called function after cqp completion
 971  * @cqp_request: cqp request info struct for hmc fun
 972  * @unused: unused param of callback
 973  */
 974 static void i40iw_cqp_manage_hmc_fcn_callback(struct i40iw_cqp_request *cqp_request,
 975                                               u32 unused)
 976 {
 977         struct virtchnl_work *work;
 978         struct i40iw_hmc_fcn_info *hmcfcninfo =
 979             &cqp_request->info.in.u.manage_hmc_pm.info;
 980         struct i40iw_device *iwdev =
 981             (struct i40iw_device *)cqp_request->info.in.u.manage_hmc_pm.dev->
 982             back_dev;
 983
 984         if (hmcfcninfo && hmcfcninfo->callback_fcn) {
 985                 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s1\n", __func__);
 986                 atomic_inc(&cqp_request->refcount);
 987                 work = &iwdev->virtchnl_w[hmcfcninfo->iw_vf_idx];
 988                 work->cqp_request = cqp_request;
 989                 INIT_WORK(&work->work, i40iw_cqp_manage_hmc_fcn_worker);
 990                 queue_work(iwdev->virtchnl_wq, &work->work);
 991                 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s2\n", __func__);
 992         } else {
 993                 i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s: Something wrong\n", __func__);
 994         }
 995 }
 996
 997 /**
 998  * i40iw_cqp_manage_hmc_fcn_cmd - issue cqp command to manage hmc
 999  * @dev: hardware control device structure
1000  * @hmcfcninfo: info for hmc
1001  */
1002 enum i40iw_status_code i40iw_cqp_manage_hmc_fcn_cmd(struct i40iw_sc_dev *dev,
1003                                                     struct i40iw_hmc_fcn_info *hmcfcninfo)
1004 {
1005         enum i40iw_status_code status;
1006         struct i40iw_cqp_request *cqp_request;
1007         struct cqp_commands_info *cqp_info;
1008         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1009
1010         i40iw_debug(&iwdev->sc_dev, I40IW_DEBUG_HMC, "%s\n", __func__);
1011         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, false);
1012         if (!cqp_request)
1013                 return I40IW_ERR_NO_MEMORY;
1014         cqp_info = &cqp_request->info;
1015         cqp_request->callback_fcn = i40iw_cqp_manage_hmc_fcn_callback;
1016         cqp_request->param = hmcfcninfo;
1017         memcpy(&cqp_info->in.u.manage_hmc_pm.info, hmcfcninfo,
1018                sizeof(*hmcfcninfo));
1019         cqp_info->in.u.manage_hmc_pm.dev = dev;
1020         cqp_info->cqp_cmd = OP_MANAGE_HMC_PM_FUNC_TABLE;
1021         cqp_info->post_sq = 1;
1022         cqp_info->in.u.manage_hmc_pm.scratch = (uintptr_t)cqp_request;
1023         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1024         if (status)
1025                 i40iw_pr_err("CQP-OP Manage HMC fail");
1026         return status;
1027 }
1028
1029 /**
1030  * i40iw_cqp_query_fpm_values_cmd - send cqp command for fpm
1031  * @iwdev: function device struct
1032  * @values_mem: buffer for fpm
1033  * @hmc_fn_id: function id for fpm
1034  */
1035 enum i40iw_status_code i40iw_cqp_query_fpm_values_cmd(struct i40iw_sc_dev *dev,
1036                                                       struct i40iw_dma_mem *values_mem,
1037                                                       u8 hmc_fn_id)
1038 {
1039         enum i40iw_status_code status;
1040         struct i40iw_cqp_request *cqp_request;
1041         struct cqp_commands_info *cqp_info;
1042         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1043
1044         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
1045         if (!cqp_request)
1046                 return I40IW_ERR_NO_MEMORY;
1047         cqp_info = &cqp_request->info;
1048         cqp_request->param = NULL;
1049         cqp_info->in.u.query_fpm_values.cqp = dev->cqp;
1050         cqp_info->in.u.query_fpm_values.fpm_values_pa = values_mem->pa;
1051         cqp_info->in.u.query_fpm_values.fpm_values_va = values_mem->va;
1052         cqp_info->in.u.query_fpm_values.hmc_fn_id = hmc_fn_id;
1053         cqp_info->cqp_cmd = OP_QUERY_FPM_VALUES;
1054         cqp_info->post_sq = 1;
1055         cqp_info->in.u.query_fpm_values.scratch = (uintptr_t)cqp_request;
1056         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1057         if (status)
1058                 i40iw_pr_err("CQP-OP Query FPM fail");
1059         return status;
1060 }
1061
1062 /**
1063  * i40iw_cqp_commit_fpm_values_cmd - commit fpm values in hw
1064  * @dev: hardware control device structure
1065  * @values_mem: buffer with fpm values
1066  * @hmc_fn_id: function id for fpm
1067  */
1068 enum i40iw_status_code i40iw_cqp_commit_fpm_values_cmd(struct i40iw_sc_dev *dev,
1069                                                        struct i40iw_dma_mem *values_mem,
1070                                                        u8 hmc_fn_id)
1071 {
1072         enum i40iw_status_code status;
1073         struct i40iw_cqp_request *cqp_request;
1074         struct cqp_commands_info *cqp_info;
1075         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1076
1077         cqp_request = i40iw_get_cqp_request(&iwdev->cqp, true);
1078         if (!cqp_request)
1079                 return I40IW_ERR_NO_MEMORY;
1080         cqp_info = &cqp_request->info;
1081         cqp_request->param = NULL;
1082         cqp_info->in.u.commit_fpm_values.cqp = dev->cqp;
1083         cqp_info->in.u.commit_fpm_values.fpm_values_pa = values_mem->pa;
1084         cqp_info->in.u.commit_fpm_values.fpm_values_va = values_mem->va;
1085         cqp_info->in.u.commit_fpm_values.hmc_fn_id = hmc_fn_id;
1086         cqp_info->cqp_cmd = OP_COMMIT_FPM_VALUES;
1087         cqp_info->post_sq = 1;
1088         cqp_info->in.u.commit_fpm_values.scratch = (uintptr_t)cqp_request;
1089         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1090         if (status)
1091                 i40iw_pr_err("CQP-OP Commit FPM fail");
1092         return status;
1093 }
1094
1095 /**
1096  * i40iw_vf_wait_vchnl_resp - wait for channel msg
1097  * @iwdev: function's device struct
1098  */
1099 enum i40iw_status_code i40iw_vf_wait_vchnl_resp(struct i40iw_sc_dev *dev)
1100 {
1101         struct i40iw_device *iwdev = dev->back_dev;
1102         int timeout_ret;
1103
1104         i40iw_debug(dev, I40IW_DEBUG_VIRT, "%s[%u] dev %p, iwdev %p\n",
1105                     __func__, __LINE__, dev, iwdev);
1106
1107         atomic_set(&iwdev->vchnl_msgs, 2);
1108         timeout_ret = wait_event_timeout(iwdev->vchnl_waitq,
1109                                          (atomic_read(&iwdev->vchnl_msgs) == 1),
1110                                          I40IW_VCHNL_EVENT_TIMEOUT);
1111         atomic_dec(&iwdev->vchnl_msgs);
1112         if (!timeout_ret) {
1113                 i40iw_pr_err("virt channel completion timeout = 0x%x\n", timeout_ret);
1114                 atomic_set(&iwdev->vchnl_msgs, 0);
1115                 dev->vchnl_up = false;
1116                 return I40IW_ERR_TIMEOUT;
1117         }
1118         wake_up(&dev->vf_reqs);
1119         return 0;
1120 }
1121
1122 /**
1123  * i40iw_cqp_cq_create_cmd - create a cq for the cqp
1124  * @dev: device pointer
1125  * @cq: pointer to created cq
1126  */
1127 enum i40iw_status_code i40iw_cqp_cq_create_cmd(struct i40iw_sc_dev *dev,
1128                                                struct i40iw_sc_cq *cq)
1129 {
1130         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1131         struct i40iw_cqp *iwcqp = &iwdev->cqp;
1132         struct i40iw_cqp_request *cqp_request;
1133         struct cqp_commands_info *cqp_info;
1134         enum i40iw_status_code status;
1135
1136         cqp_request = i40iw_get_cqp_request(iwcqp, true);
1137         if (!cqp_request)
1138                 return I40IW_ERR_NO_MEMORY;
1139
1140         cqp_info = &cqp_request->info;
1141         cqp_info->cqp_cmd = OP_CQ_CREATE;
1142         cqp_info->post_sq = 1;
1143         cqp_info->in.u.cq_create.cq = cq;
1144         cqp_info->in.u.cq_create.scratch = (uintptr_t)cqp_request;
1145         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1146         if (status)
1147                 i40iw_pr_err("CQP-OP Create QP fail");
1148
1149         return status;
1150 }
1151
1152 /**
1153  * i40iw_cqp_qp_create_cmd - create a qp for the cqp
1154  * @dev: device pointer
1155  * @qp: pointer to created qp
1156  */
1157 enum i40iw_status_code i40iw_cqp_qp_create_cmd(struct i40iw_sc_dev *dev,
1158                                                struct i40iw_sc_qp *qp)
1159 {
1160         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1161         struct i40iw_cqp *iwcqp = &iwdev->cqp;
1162         struct i40iw_cqp_request *cqp_request;
1163         struct cqp_commands_info *cqp_info;
1164         struct i40iw_create_qp_info *qp_info;
1165         enum i40iw_status_code status;
1166
1167         cqp_request = i40iw_get_cqp_request(iwcqp, true);
1168         if (!cqp_request)
1169                 return I40IW_ERR_NO_MEMORY;
1170
1171         cqp_info = &cqp_request->info;
1172         qp_info = &cqp_request->info.in.u.qp_create.info;
1173
1174         memset(qp_info, 0, sizeof(*qp_info));
1175
1176         qp_info->cq_num_valid = true;
1177         qp_info->next_iwarp_state = I40IW_QP_STATE_RTS;
1178
1179         cqp_info->cqp_cmd = OP_QP_CREATE;
1180         cqp_info->post_sq = 1;
1181         cqp_info->in.u.qp_create.qp = qp;
1182         cqp_info->in.u.qp_create.scratch = (uintptr_t)cqp_request;
1183         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1184         if (status)
1185                 i40iw_pr_err("CQP-OP QP create fail");
1186         return status;
1187 }
1188
1189 /**
1190  * i40iw_cqp_cq_destroy_cmd - destroy the cqp cq
1191  * @dev: device pointer
1192  * @cq: pointer to cq
1193  */
1194 void i40iw_cqp_cq_destroy_cmd(struct i40iw_sc_dev *dev, struct i40iw_sc_cq *cq)
1195 {
1196         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1197
1198         i40iw_cq_wq_destroy(iwdev, cq);
1199 }
1200
1201 /**
1202  * i40iw_cqp_qp_destroy_cmd - destroy the cqp
1203  * @dev: device pointer
1204  * @qp: pointer to qp
1205  */
1206 void i40iw_cqp_qp_destroy_cmd(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp)
1207 {
1208         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1209         struct i40iw_cqp *iwcqp = &iwdev->cqp;
1210         struct i40iw_cqp_request *cqp_request;
1211         struct cqp_commands_info *cqp_info;
1212         enum i40iw_status_code status;
1213
1214         cqp_request = i40iw_get_cqp_request(iwcqp, true);
1215         if (!cqp_request)
1216                 return;
1217
1218         cqp_info = &cqp_request->info;
1219         memset(cqp_info, 0, sizeof(*cqp_info));
1220
1221         cqp_info->cqp_cmd = OP_QP_DESTROY;
1222         cqp_info->post_sq = 1;
1223         cqp_info->in.u.qp_destroy.qp = qp;
1224         cqp_info->in.u.qp_destroy.scratch = (uintptr_t)cqp_request;
1225         cqp_info->in.u.qp_destroy.remove_hash_idx = true;
1226         status = i40iw_handle_cqp_op(iwdev, cqp_request);
1227         if (status)
1228                 i40iw_pr_err("CQP QP_DESTROY fail");
1229 }
1230
1231
1232 /**
1233  * i40iw_ieq_mpa_crc_ae - generate AE for crc error
1234  * @dev: hardware control device structure
1235  * @qp: hardware control qp
1236  */
1237 void i40iw_ieq_mpa_crc_ae(struct i40iw_sc_dev *dev, struct i40iw_sc_qp *qp)
1238 {
1239         struct i40iw_qp_flush_info info;
1240         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1241
1242         i40iw_debug(dev, I40IW_DEBUG_AEQ, "%s entered\n", __func__);
1243         memset(&info, 0, sizeof(info));
1244         info.ae_code = I40IW_AE_LLP_RECEIVED_MPA_CRC_ERROR;
1245         info.generate_ae = true;
1246         info.ae_source = 0x3;
1247         (void)i40iw_hw_flush_wqes(iwdev, qp, &info, false);
1248 }
1249
1250 /**
1251  * i40iw_init_hash_desc - initialize hash for crc calculation
1252  * @desc: cryption type
1253  */
1254 enum i40iw_status_code i40iw_init_hash_desc(struct shash_desc **desc)
1255 {
1256         struct crypto_shash *tfm;
1257         struct shash_desc *tdesc;
1258
1259         tfm = crypto_alloc_shash("crc32c", 0, 0);
1260         if (IS_ERR(tfm))
1261                 return I40IW_ERR_MPA_CRC;
1262
1263         tdesc = kzalloc(sizeof(*tdesc) + crypto_shash_descsize(tfm),
1264                         GFP_KERNEL);
1265         if (!tdesc) {
1266                 crypto_free_shash(tfm);
1267                 return I40IW_ERR_MPA_CRC;
1268         }
1269         tdesc->tfm = tfm;
1270         *desc = tdesc;
1271
1272         return 0;
1273 }
1274
1275 /**
1276  * i40iw_free_hash_desc - free hash desc
1277  * @desc: to be freed
1278  */
1279 void i40iw_free_hash_desc(struct shash_desc *desc)
1280 {
1281         if (desc) {
1282                 crypto_free_shash(desc->tfm);
1283                 kfree(desc);
1284         }
1285 }
1286
1287 /**
1288  * i40iw_alloc_query_fpm_buf - allocate buffer for fpm
1289  * @dev: hardware control device structure
1290  * @mem: buffer ptr for fpm to be allocated
1291  * @return: memory allocation status
1292  */
1293 enum i40iw_status_code i40iw_alloc_query_fpm_buf(struct i40iw_sc_dev *dev,
1294                                                  struct i40iw_dma_mem *mem)
1295 {
1296         enum i40iw_status_code status;
1297         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1298
1299         status = i40iw_obj_aligned_mem(iwdev, mem, I40IW_QUERY_FPM_BUF_SIZE,
1300                                        I40IW_FPM_QUERY_BUF_ALIGNMENT_MASK);
1301         return status;
1302 }
1303
1304 /**
1305  * i40iw_ieq_check_mpacrc - check if mpa crc is OK
1306  * @desc: desc for hash
1307  * @addr: address of buffer for crc
1308  * @length: length of buffer
1309  * @value: value to be compared
1310  */
1311 enum i40iw_status_code i40iw_ieq_check_mpacrc(struct shash_desc *desc,
1312                                               void *addr,
1313                                               u32 length,
1314                                               u32 value)
1315 {
1316         u32 crc = 0;
1317         int ret;
1318         enum i40iw_status_code ret_code = 0;
1319
1320         crypto_shash_init(desc);
1321         ret = crypto_shash_update(desc, addr, length);
1322         if (!ret)
1323                 crypto_shash_final(desc, (u8 *)&crc);
1324         if (crc != value) {
1325                 i40iw_pr_err("mpa crc check fail\n");
1326                 ret_code = I40IW_ERR_MPA_CRC;
1327         }
1328         return ret_code;
1329 }
1330
1331 /**
1332  * i40iw_ieq_get_qp - get qp based on quad in puda buffer
1333  * @dev: hardware control device structure
1334  * @buf: receive puda buffer on exception q
1335  */
1336 struct i40iw_sc_qp *i40iw_ieq_get_qp(struct i40iw_sc_dev *dev,
1337                                      struct i40iw_puda_buf *buf)
1338 {
1339         struct i40iw_device *iwdev = (struct i40iw_device *)dev->back_dev;
1340         struct i40iw_qp *iwqp;
1341         struct i40iw_cm_node *cm_node;
1342         u32 loc_addr[4], rem_addr[4];
1343         u16 loc_port, rem_port;
1344         struct ipv6hdr *ip6h;
1345         struct iphdr *iph = (struct iphdr *)buf->iph;
1346         struct tcphdr *tcph = (struct tcphdr *)buf->tcph;
1347
1348         if (iph->version == 4) {
1349                 memset(loc_addr, 0, sizeof(loc_addr));
1350                 loc_addr[0] = ntohl(iph->daddr);
1351                 memset(rem_addr, 0, sizeof(rem_addr));
1352                 rem_addr[0] = ntohl(iph->saddr);
1353         } else {
1354                 ip6h = (struct ipv6hdr *)buf->iph;
1355                 i40iw_copy_ip_ntohl(loc_addr, ip6h->daddr.in6_u.u6_addr32);
1356                 i40iw_copy_ip_ntohl(rem_addr, ip6h->saddr.in6_u.u6_addr32);
1357         }
1358         loc_port = ntohs(tcph->dest);
1359         rem_port = ntohs(tcph->source);
1360
1361         cm_node = i40iw_find_node(&iwdev->cm_core, rem_port, rem_addr, loc_port,
1362                                   loc_addr, false);
1363         if (!cm_node)
1364                 return NULL;
1365         iwqp = cm_node->iwqp;
1366         return &iwqp->sc_qp;
1367 }
1368
1369 /**
1370  * i40iw_ieq_update_tcpip_info - update tcpip in the buffer
1371  * @buf: puda to update
1372  * @length: length of buffer
1373  * @seqnum: seq number for tcp
1374  */
1375 void i40iw_ieq_update_tcpip_info(struct i40iw_puda_buf *buf, u16 length, u32 seqnum)
1376 {
1377         struct tcphdr *tcph;
1378         struct iphdr *iph;
1379         u16 iphlen;
1380         u16 packetsize;
1381         u8 *addr = (u8 *)buf->mem.va;
1382
1383         iphlen = (buf->ipv4) ? 20 : 40;
1384         iph = (struct iphdr *)(addr + buf->maclen);
1385         tcph = (struct tcphdr *)(addr + buf->maclen + iphlen);
1386         packetsize = length + buf->tcphlen + iphlen;
1387
1388         iph->tot_len = htons(packetsize);
1389         tcph->seq = htonl(seqnum);
1390 }
1391
1392 /**
1393  * i40iw_puda_get_tcpip_info - get tcpip info from puda buffer
1394  * @info: to get information
1395  * @buf: puda buffer
1396  */
1397 enum i40iw_status_code i40iw_puda_get_tcpip_info(struct i40iw_puda_completion_info *info,
1398                                                  struct i40iw_puda_buf *buf)
1399 {
1400         struct iphdr *iph;
1401         struct ipv6hdr *ip6h;
1402         struct tcphdr *tcph;
1403         u16 iphlen;
1404         u16 pkt_len;
1405         u8 *mem = (u8 *)buf->mem.va;
1406         struct ethhdr *ethh = (struct ethhdr *)buf->mem.va;
1407
1408         if (ethh->h_proto == htons(0x8100)) {
1409                 info->vlan_valid = true;
1410                 buf->vlan_id = ntohs(((struct vlan_ethhdr *)ethh)->h_vlan_TCI) & VLAN_VID_MASK;
1411         }
1412         buf->maclen = (info->vlan_valid) ? 18 : 14;
1413         iphlen = (info->l3proto) ? 40 : 20;
1414         buf->ipv4 = (info->l3proto) ? false : true;
1415         buf->iph = mem + buf->maclen;
1416         iph = (struct iphdr *)buf->iph;
1417
1418         buf->tcph = buf->iph + iphlen;
1419         tcph = (struct tcphdr *)buf->tcph;
1420
1421         if (buf->ipv4) {
1422                 pkt_len = ntohs(iph->tot_len);
1423         } else {
1424                 ip6h = (struct ipv6hdr *)buf->iph;
1425                 pkt_len = ntohs(ip6h->payload_len) + iphlen;
1426         }
1427
1428         buf->totallen = pkt_len + buf->maclen;
1429
1430         if (info->payload_len < buf->totallen) {
1431                 i40iw_pr_err("payload_len = 0x%x totallen expected0x%x\n",
1432                              info->payload_len, buf->totallen);
1433                 return I40IW_ERR_INVALID_SIZE;
1434         }
1435
1436         buf->tcphlen = (tcph->doff) << 2;
1437         buf->datalen = pkt_len - iphlen - buf->tcphlen;
1438         buf->data = (buf->datalen) ? buf->tcph + buf->tcphlen : NULL;
1439         buf->hdrlen = buf->maclen + iphlen + buf->tcphlen;
1440         buf->seqnum = ntohl(tcph->seq);
1441         return 0;
1442 }
1443
1444 /**
1445  * i40iw_hw_stats_timeout - Stats timer-handler which updates all HW stats
1446  * @vsi: pointer to the vsi structure
1447  */
1448 static void i40iw_hw_stats_timeout(unsigned long vsi)
1449 {
1450         struct i40iw_sc_vsi *sc_vsi =  (struct i40iw_sc_vsi *)vsi;
1451         struct i40iw_sc_dev *pf_dev = sc_vsi->dev;
1452         struct i40iw_vsi_pestat *pf_devstat = sc_vsi->pestat;
1453         struct i40iw_vsi_pestat *vf_devstat = NULL;
1454         u16 iw_vf_idx;
1455         unsigned long flags;
1456
1457         /*PF*/
1458         i40iw_hw_stats_read_all(pf_devstat, &pf_devstat->hw_stats);
1459
1460         for (iw_vf_idx = 0; iw_vf_idx < I40IW_MAX_PE_ENABLED_VF_COUNT; iw_vf_idx++) {
1461                 spin_lock_irqsave(&pf_devstat->lock, flags);
1462                 if (pf_dev->vf_dev[iw_vf_idx]) {
1463                         if (pf_dev->vf_dev[iw_vf_idx]->stats_initialized) {
1464                                 vf_devstat = &pf_dev->vf_dev[iw_vf_idx]->pestat;
1465                                 i40iw_hw_stats_read_all(vf_devstat, &vf_devstat->hw_stats);
1466                         }
1467                 }
1468                 spin_unlock_irqrestore(&pf_devstat->lock, flags);
1469         }
1470
1471         mod_timer(&pf_devstat->stats_timer,
1472                   jiffies + msecs_to_jiffies(STATS_TIMER_DELAY));
1473 }
1474
1475 /**
1476  * i40iw_hw_stats_start_timer - Start periodic stats timer
1477  * @vsi: pointer to the vsi structure
1478  */
1479 void i40iw_hw_stats_start_timer(struct i40iw_sc_vsi *vsi)
1480 {
1481         struct i40iw_vsi_pestat *devstat = vsi->pestat;
1482
1483         setup_timer(&devstat->stats_timer, i40iw_hw_stats_timeout,
1484                     (unsigned long)vsi);
1485         mod_timer(&devstat->stats_timer,
1486                   jiffies + msecs_to_jiffies(STATS_TIMER_DELAY));
1487 }
1488
1489 /**
1490  * i40iw_hw_stats_stop_timer - Delete periodic stats timer
1491  * @vsi: pointer to the vsi structure
1492  */
1493 void i40iw_hw_stats_stop_timer(struct i40iw_sc_vsi *vsi)
1494 {
1495         struct i40iw_vsi_pestat *devstat = vsi->pestat;
1496
1497         del_timer_sync(&devstat->stats_timer);
1498 }